38 THE CACTACEAE. 
14; centrals 4 to 6, nearly porrect; flowers large, 8 cm. long, reddish purple; areoles on the ovary 
bearing clusters of reddish spines; stigma-lobes numerous; perianth-segments narrowly obovate, 
obtuse or obtusish. 
Collected near Tuna Springs, Texas, in 1909, by F. E. Loyd, for whom it is named. 
Plate iv, figure 4, shows the top of one of the type plants in flower at the New York 
Botanical Garden. Figure 46 is from a photograph of one of the type plants taken in 
Washington. 
52. Echinocereus engelmannii (Parry) Riimpler in Férster, Handb. Cact. ed. 2. 805. 1885. 
Cereus engelmannii Parry in Engelmann, Amer. Jour. Sci. II. 14: 338. 1852. 
Cereus engelmannii variegatus Engelmann and Bigelow, Proc. Amer. Acad. 3: 283. 1856. 
Cereus engelmannii chrysocentrus Engelmann and Bigelow, Proc. Amer. Acad. 3: 283. 1856. 
Echinocereus engelmannii chrysocentrus Riimpler in Forster, Handb. Cact. ed. 2. 806. 1885. 
Echinocereus engelmannii variegatus Riimpler in Forster, Handb. Cact. ed. 2. 806. 1885. 
Cespitose, forming large clumps; joints erect or ascending, cylindric, 1 to 3 dm. long, 5 to 6 cm. 
in diameter; ribs 11 to 14, low, obtuse; areoles large, nearly circular; radial spines about 10, ap- 
pressed, stiff, about 1 cm. long; central spines 5 or 6, very stout, more or less curved and twisted, 
terete or somewhat flattened, sometimes 7 cm. long, yellowish to brown, more or less variegated; 
flowers somewhat variable in size, 5 to 8 cm. long, and even broader when fully expanded, purple; 
perianth-segments oblong, 3 to 4 cm. long, acuminate; scales on ovary 3 to 5 mm. long, acuminate; 
areoles felted and bearing stout bristles; fruit ovoid to oblong, spiny, about 3 cm. long; seeds black, 
nearly globular, or a little oblique, 1.5 mm. in diameter or less, tuberculate. 
Type locality: Mountains about San 
Felipe, southern California. 
Distribution: California, Nevada, Utah, 
Arizona, Sonora, and Lower California. 
The three varieties, albispinus Cels, 
fulvispinus Cels, and pfersdorffiz Heyder, 
mentioned by Schumann (Gesamtb. Kakteen 
276. 1898) are simply forms named from 
color differences in the spines. 
Two other varieties have been mentioned 
but are unimportant: robustior Hildmann and 
versicolor (Monatsschr. Kakteenk. 4: 194. 
1894). 
Some Arizona and Sorora specimens have 
more slender and lighter-colored spines than 
is typical, and on these the variety chrysocentrus was based. Additional field observations 
may show this to be a distinct species; the spines closely resemble those of E. stramineus. 
Illustrations: Journ. N. Y. Bot. Gard. 6: 93, as Echinocereus; Cact. Mex. Bound. pl. 
57; Gartenflora 33: pl. 1174a, as Cereus engelmannii; Pac. R. Rep. 4: pl. 5, f. 8 to 10, as 
Cereus engelmannii chrysocentrus; Pac. R. Rep. 4: pl. 5, f. 4 to 7, as Cereus engelmannit 
variegatus; Cact. Journ. 2: 132, as Echinocactus engelmannii,; Cact. Journ. 1: pl. for Septem- 
ber; 2: 146; Monatsschr. Kakteenk. 16: 151; Schelle, Handb. Kakteenk. 134. f. 65; Journ. 
N. Y. Bot. Gard. 6:f. 23; Contr. U. S. Nat. Herb. 16: pl. 8, 9. 
Plate v, figure 1, shows the top of a plant, which flowered at the New York Botanical 
Garden, sent by S. B. Parish from southern California in 1915. 
Fic. 47.—Echinocereus sarissophorus. 
53. Echinocereus sarissophorus sp. nov. 
Cespitose; stems short, thick, pale green, about 10 cm. thick; ribs 9; radial spines 7 to 10, slender; 
centrals several, 5 to 8 cm. long, often bluish, somewhat angled; flowers purplish, 7 to 8 cm. long; 
inner perianth-segments broad; areoles on ovary and flower-tube bearing short, white wool and 3 to 5 
long pale bristle-like spines; fruit globular, 2 to 3 cm. in diameter, covered with clusters of deciduous 
spines; seeds black. 
Score eae EI 
